$ clisp <...snip...> [1]> (load "quarto.l") ;; Loading file quarto.l ... ;; Loading file lp.l ... ;; Loaded file lp.l ;; Loaded file quarto.l T [2]> (task59--four-similar-pieces-demo) The line ([B+] [b+] (R+) (r+)) consists of four similar pieces? T The line ([B+] [b+] NIL (r+)) consists of four similar pieces? NIL The line ([B+] [b+] (R+) (r-)) consists of four similar pieces? NIL NIL [3]> (bye) Bye.